Gun telescope mounting



Dec. 16, 1952 5,1-, STREET 2,621,410

GUN TELEscoPE MOUNTING Filed April 13, 194.91

IN VEN TOR.

FI G 5 'f BYDONALD T. STREET Patented Dec. 16, 1952 GUN TELEscoPEMOUNTING Donald T. Street, Brighton, N. Y., assignor to Bausch & Lomb.Optical Company, Rochester, N. Y., a corpora-tion of New YorkApplication'Api-il 13, 1949, Serial No. 87,2347

3 Claims.

1 This inventionV relates to improvements-in gun telescope mountings andmore particularly it relates toclamping and alignment means whereby atelescope which isdetachably secured to a gun is held thereon in properalignment even though Vadjustments of the telescope are made tocompensate for windagefor elevation.

In developing a gun telescope mounting lof the adjustable type whichincorporates yieldable clamping means for the telescope, difficulty isexperienced in keeping the line of sight of the telescope coincidentwith its predicted position Awhen the windageand elevational adjustmentsare made.

l Itis anobject of this invention to provide a gun telescope mounting,having windage and elevation adjustments, with novel means fordetachably holding a telescope in proper alignment with a gun on whichit is mounted.

It is another object to provide such a device which will prevent thetelescope from becoming accidentally misplaced in either a rotational,longitudinal, or vertical direction when elevation or windageadjustments are made.

Other objects and advantages reside inthe novel details of constructionand -combination of parts as described in the following specificationand shown in the accompanying drawing in which:

Y Fig.r l is a side View of a preferred form of my ygun telescopemounting showing it in use,

Fig. 2 is a top View thereof with parts of the telescope broken away,

Fig. 3 is an enlarged vertical sectional view of the front mount showingdetails of construction, and

Fig. 4 is an enlarged sectional view taken on the line 4-4 of Fig. l.

The herein disclosed seating members for adjustably supporting atelescope are the subject matter of my co-pending application for UnitedStates patent Serial No. 21,349, led April 16, 1948.

In Fig. 1, there is shown the breech I of a gun on which a front bracketII and a rear bracket I2 are fixed by suitable means such as screws I3and I4, respectively. Seating members I5 and I6 for receiving atelescope Il are rotatably mounted for adjustment purposes in thebrackets II and I2, respectively, and are provided with conical seatingsurfaces I8, I9 and 2|, 22, respectively, on which the telescope rests.The conical seating surfaces I8 and I9 are connected by a cylindricalneck portion 24 and the axes of the surfaces are concentric with theaxis of the rotatable member I5. The end 20' ofthe member I5 isjournaled in bracket II whilefthe other end is threaded into bracket II.as at 23.. A lateral or windage adjustment of the: telescope I1 may,accordingly, be effected by rotating the member I5 by means of a coin orblade which is inserted in slot I5'. The conical seating surfaces 2I, 22on the seating member I6 are vformed as radial, spirally curvevdsurfacesso that rotation of the member Iii by means of a coin or blade in slotI6' causes the telescopey I'I. to move vertically to effect adjustmentsfor. elevation. The conical seating surfaces 2I and 22 'are connected bya cylindrical neck 25 whose axis of rotation is concentric with the axisof rotation of said member I6. To secure the seating members I5 and I6in adjusted position, lockscrews 36 and 36', threaded respectivelythereinl and bearing against their respective brackets II and I2, areprovided.

Yieldable attaching means are provided for the telescope I'I comprisinga rod-like `anchor member 25 which is fixedly secured to the telescopein any preferred manner, as by a pair of straps 2'?, 28. One end of theanchor member 26 is bored as at 29 to receive a. locking plunger 3-Ihaving a beveled end 33 which is urged by a spring 32 against the neck25 for'locking the telescope in place on its seating member I6 by its-camming action. A substantially'verticalsurface 34 on the forward endof the anchor member 26 is urged, by the action of spring 32., againstthe neck 24 so as to locate the telescope I'I longitudinally on the gunand to transmit the shock of recoil to the telescope withouttransmitting any undesirable transverse stresses thereto.

An essential feature of this invention is the clamping means which isformed on the forward end of the anchor member 26 and is preferablyconstructed as a blade 35 extending from the anchor member and locatedbelow the surface 34. The blade 35 has a broad upper contact surface 36adapted to rmly engage the underside of the cylindrical neck 24 to holdthe telescope I'I firmly onto seating member I5 so as to preventvertical movement of the telescope. The blade 35 is preferably slightlyresilient, and, as shown in Figs. 3 and 4, it is pressed upwardlyagainst the neck 24. An adjusting screw 3l, threaded into the anchormember 26 beneath the blade 35 and bearing thereon, is provided forvarying the clamping pressure between the blade 35 and neck 24.

In order to prevent the telescope I'I from tending to rotate whenwindage adjustments are made to the telescope, the ends of thecylindrical neck are provided with vertical shoulders 38 and 3S againstwhich the sides of the blade 35 closely t as shown in Fig. 4. Thisconstuction provides a broad area of contact of the blade against theunderside of the neck as best shown in Fig. 4 which per se tends to keepthe telescope from rotating. Since the blade 35 is closely fittedbetween the shoulders 38 and 39, windage movements of the seating memberl5 are communicated not only to the telescope but also to the blade 35thus maintaining the blade accurately beneath the center of thetelescope and nullifying any tendency of the telescopeto roll.

In assembling the telescope l1 of thegun, 'it is only necessary to placethe telescope on the rear seating number I6 with the bevel 33 againstthe neck and move the telescope in the direction of the arrow in Fig. 1so as to compress the spring 32 enough to permit the blade 35 to dropbelow the neck 24. Upon release of the telescope, spring 32 forces theblade 35 under the neck 24 and urges the vertical surface 34 intocontact with the neck and thereby securely holds the telescope I'I inproper position.

From the foregoing, it will be seen that there is here provided a guntelescope mounting embodying Windage and elevation adjustments andhaving yieldable means for detachably clamping the telescope on the gunin proper alignment therewith regardless of the adjusting movements ofthe mounting.

Although but one form of this invention has been shown and described indetail, it will be understood that other forms are possible and changesmay be made in the form and arrangement of parts and substitutions maybe made without departing from the spirit of the invention as dened inthe appended claims.

I claim:

1. In the gun telescope mounting having a rotatable seat member providedwith spaced telescope receiving surfaces connected by a neck, and ananchor member carried by the telescope and urged by a spring intoengagement with the neck, the combination of a resilient blade pro,-jecting horizontally from the anchor member, a portion on the anchormember having a vertical surface positioned above the blade, the upperface of the blade and said surface being respectively urged intoengagement with the under and 4 lateral sides of the neck when thetelescope is mounted thereon.

2. In a gun telescope mounting having a bracket secured to the gun, thecombination of a seat member rotatably mounted on the bracket andcomprising a pair of spaced inclined surfaces for receiving thetelescope, means for moving the sea-t member axially '-as" ityis rotatedwhereby the telescope may be laterally adjusted relative to the gun,said surfaces being connected by a cylindrical neck, an anchor membersecured to the telescope and having one end adjacent the bracket, aresilient blade projecting horizontally from theV end of the anchormember and extending under and in engagement with the neck,

the sides of said blade contacting shoulder p0rtions `formed at therespective ends of the neck, whereby the telescope will be held againstrotation on the surfaces while the seat .member is adjusted.

3. In a gun telescope mounting havingA a bracket secured to a gun barreland yieldable attaching means including an anchor member-on a telescopeby which it is held on the bracket so as to permit adjustments thereofin vertical and horizontal planes, the combination of ay horizontal neckpositioned on said bracket and `spaced from the underside of thetelescope, and aresilient blade extending laterally from said anchormember, the blade having a portion extending beneath the neck andcoacting therewith to clamp the telescope on the bracket,.and meanscarried by the end of the anchor member for moving said portion towardand awayn from said neck to adjust the clamping pressure ,therebe tweenwhereby the `telescope is held against rotation in the bracket. n tDONALD T. STREET.

REFERENCES CITED v The following references are of record inthe le ofthis patent:

UNITED STATES PATENTS Number Name i. Date 2,036,290 McCann Y y, Apr.7,1936 2,125,828 Y Turner; Aus, 2.19.38 2,401,825 Gruver n June, 1 1,,19416 2,450,466 Carnon oct. 45,-.-1958 2,452,145 Pike i oct; 26,19482,475,383 Foster t., k r July 5, f 1949 2,510,289

